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  • 1
    Electronic Resource
    Electronic Resource
    Neue acetonylsubstituierte Azole I. 5-Acetonyl-1,2,4-oxadiazole (1982)
    Springer
    Monatshefte für Chemie 113 (1982), S. 781-792 
    Details
    ISSN: 1434-4475
    Keywords: Active methylene group ; Ketone ; 1,2,4-Oxadiazole ; Vinyl dimethylcarbamate ; 5-Vinyl-oxadiazole
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Aliphatic amidoximesR—C (NH2)=NOH react with diketene to yield 5-acetonyl-3-alkyl-1,2,4-oxadiazoles, which are susceptible to a wide variety of reactions at the keto-group as well as at the methylene-group. Their transformations into 1-methyl-2-oxadiazolyl-vinylN,N-dimethylcarbamates, 2-chloro-1-oxadiazolylpropenes, 1-oxadiazolyl-2-(1,2,4-triazol-1-yl)propenes, 1,1-dichloro-1-oxadiazolylacetones and 3-hydroxy-2-oxadiazolyl-crotonic amides are described as well as their reactions with diazonium salts, with sodium nitrite and with carbon disulfide. Further products obtained are carbamates of of 1-oxadiazolyl-2-oxo-propane-1-oximes, 2-chloro-2-oxadiazolylvinyl phosphates and an oxadiazolyl pyrimidine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00809019
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  • 2
    Electronic Resource
    Electronic Resource
    Neue acetonylsubstituierte Azole II. 3-Acetonyl-1,2,4-oxadiazole, 2-Acetonyl-1,3,4-oxadiazole und 5-Acetonyl-1,2,4-thiadiazole (1982)
    Springer
    Monatshefte für Chemie 113 (1982), S. 793-803 
    Details
    ISSN: 1434-4475
    Keywords: Ketone ; 1,2,4-Oxadiazole ; 1,3,4-Oxadiazole ; 1,2,4-Thiadiazole ; Vinyl phosphate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract 3-Acetonyl-1,2,4-oxadiazoles and 2-acetonyl-1,3,4-oxadiazoles are accessible starting with the ketal of acetoacetamide oxime and the ketal of acetoacetic acid hydrazide, respectively. 5-Acetonyl-1,2,4-thiadiazoles are obtained from 5-chloro-1,2,4-thiadiazoles andtert.-butyl acetoacetate. These Acetonyl-azoles are starting materials for three series of azolylvinyl phosphates and phosphonates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00809020
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  • 3
    Electronic Resource
    Electronic Resource
    Neue acetonylsubstituierte Azole III. Umlagerung von 3-Acetonyl-1,2,4-oxadiazolen in 3-Acylamino-isoxazole (1983)
    Springer
    Monatshefte für Chemie 114 (1983), S. 373-376 
    Details
    ISSN: 1434-4475
    Keywords: Enolate ; Isoxazole ; Ketone ; Mononuclear rearrangement ; 1,2,4-Oxadiazole
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract 3-Acetonyl-1,2,4-oxadiazoles on treatment with strong bases rearrange via their enolates by simultaneous cleavage of one N-O-bond and forming of another N-O-bond to 3-acylamino-isoxazoles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00798961
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